Enabling Is-Is Routing - Cisco Catalyst 3750 Software Configuration Manual

Configuring ISO CLNS Routing
Table 28-14 Default IS-IS Configuration (continued)
Feature
Maximum LSP packet size
Partial route computation (PRC) throttling
timers
Partition avoidance
Password
Set-overload-bit
Shortest path first (SPF) throttling timers
Summary-address

Enabling IS-IS Routing

To enable IS-IS, you specify a name and NET for each routing process. You then enable IS-IS routing
on the interface and specify the area for each instance of the routing process.
Beginning in privileged EXEC mode, follow these steps to enable IS-IS and specify the area for each
instance of the IS-IS routing process:
Command
Step 1
configure terminal
Step 2
clns routing
Step 3 router isis [area tag]
Step 4
net network-entity-title
Step 5 is-type {level-1 | level-1-2 |
level-2-only}
Catalyst 3750 Metro Switch Software Configuration Guide
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Default Setting
1497 bytes.
Maximum PRC wait interval: 5 seconds.
Initial PRC calculation delay after a topology change: 2000 ms.
Hold time between the first and second PRC calculation: 5000 ms.
Disabled.
No area or domain password is defined, and authentication is disabled.
Disabled. When enabled, if no arguments are entered, the overload bit is set
immediately and remains set until you enter the no set-overload-bit command.
Maximum interval between consecutive SFPs: 10 seconds.
Initial SFP calculation after a topology change: 5500 ms.
Holdtime between the first and second SFP calculation: 5500 ms.
Disabled.
Purpose
Enter global configuration mode.
Enable ISO connectionless routing on the switch.
Enable the IS-IS routing for the specified routing process and enter IS-IS
routing configuration mode.
(Optional) Use the area tag argument to identify the area to which the IS-IS
router is assigned. You must enter a value if you are configuring multiple
IS-IS areas.
The first IS-IS instance configured is Level 1-2 by default. Later instances
are automatically Level 1. You can change the level of routing by using the
is-type global configuration command.
Configure the NETs for the routing process. If you are configuring
multiarea IS-IS, specify a NET for each routing process. You can specify a
name for a NET and for an address.
(Optional) You can configure the router to act as a Level 1 (station) router,
a Level 2 (area) router for multi-area routing, or both (the default):
level-1—act as a station router only
•
level-1-2—act as both a station router and an area router
•
level 2—act as an area router only
•
Chapter 28 Configuring IP Unicast Routing
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